JOURNAL of Soil Biology and Ecology 

Efficacy of bio agents against root-knot nematode in organically grown pomegranate crop

Authors: N.G. RAVICHANDRA AND C.P. MANJULA

Abstract:

Pomegranate is an economical fruit crop which derives high monetary returns mainly because of its export value. Among several constraints affecting the yield, the root-knot nematode is prominent, affecting output quality and quantity. Further, it is also involved in complex diseases, especially with wilt-causing fungi leading to severe losses. Field experiments were conducted in two seasons to manage root-knot nematode infesting pomegranate using bioagents, castor cake and FYM individually and in combination. Purpureocillium lilacinum @ 20kg/ha talc formulation (108 spores/g talc) along with castor cake @ 2.0t/ha was more effective in reducing the nematode population (92.5 and 99 / 200cc soil, respectively) and correspondingly the root-knot index was lower (2.0) in this treatment. The bioagent was recovered during the 12 months of the crop cycle relating to its higher endurance compared to other bioagents with sufficient moisture and provision for its growth in the rhizosphere of the crop.

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